Radiant energy – Invisible radiation responsive nonelectric signalling – Photographic type
Patent
1974-11-11
1976-07-27
Smith, Alfred E.
Radiant energy
Invisible radiation responsive nonelectric signalling
Photographic type
354 62, G03B 4116
Patent
active
039719545
ABSTRACT:
A source of ultra violet light is directed onto the teeth of a patient via a mouthpiece which engages the gums above and below the tooth lines. A camera is attached and pictures may be taken of the teeth. By detecting differences in ultra violet absorption and reflection on the teeth, the detection of carious lesions may be undertaken in the relatively early stage of their development. Furthermore, deposits of dental plaque may be photographed readily and easily. The mouthpiece which may be disposable, is detachably securable to a base and is shaped at the mouth engaging end to engage the gums and hold the lips clear of the teeth during photography. It may be positioned in several locations relative to the mouth so that all of the teeth may be photographed and a mirror assembly may be attached so that the lingual and occlusal surfaces of the teeth may be photographed.
REFERENCES:
patent: 2072390 (1937-03-01), van Hartingsvelt
patent: 2185508 (1940-01-01), Kunze
patent: 2290793 (1942-07-01), Alderman
patent: 3388645 (1968-06-01), Sullivan
patent: 3479937 (1969-11-01), Sullivan
patent: 3812505 (1974-05-01), Elliot
Castaldi Cosmo
Domokos Alex
Kleinberg Israel
Ade Stanley G.
Alphametrics Ltd.
Nelms D. C.
Smith Alfred E.
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